The United States of America As Represented by the Secretary of

Sidney L Vail

Donald J Daigle

Armand B Pepperman, Jr

Tris(4-substitutedureidomethyl)phosphine oxides were prepared by the reaction of tris(hydroxymethyl)phosphine with substituted ureas. The phosphine oxides were used to impart flame retardancy to cellulosic materials. They were effective as flame retardants either alone or in combination with hydroxymethylphosphorus compounds or hydroxymethylnitrogen compounds.

Tris(ureidomethyl)phosphine oxides

Soluble adduct polymers were allowed to react with phenol, alkyl substituted phenols or halogen substituted phenols which contain one or more hydrogens ortho or para to the phenolic hydroxyl group to (a) prepare flame resistant polymers and (b) prepare flame-, glow-, wrinkle- and shrink-resistant woven and knit textiles which contain 25% or more cellulosic fibers.

Water soluble adduct of hydroxymethyl phosphorous compound and ammonia

Phosphorus- and nitrogen-containing polymers, solubilized by hydroxymethylphosphonium salts and formaldehyde, were allowed to react with phenol, alkyl substituted phenols, or halogen substituted phenols which contain one or more hydrogens ortho or para to the phenolic hydroxyl group to (a) prepare flame-resistant polymers and (b) prepare flame-, glow-, wrinkle-, and shrink-resistant woven and knit textiles which contain 25% or more cellulosic fibers.

Treatment of organic textiles with adduct polymers and phenols

Soluble adduct polymers were allowed to react with nitrogenous compounds such as urea, trimethylolmelamine, and ammonia to (a) prepare flame resistant polymers and (b) prepare flame-, glow-, wrinkle-, and shrink-resistant woven and knit textiles which contain 25% or more cellulosic fibers.

Phosphorus and nitrogen containing resins for flameproofing organic

Flame resistant organic textiles through treatment with phenols and

Hydroxymethylphosphine-ammonia and similar polymers, solubilized by hydroxymethylphosphonium salts and formaldehyde, were allowed to react with nitrogenous compounds such as urea, trimethylolmelamine and ammonia to (a) prepare flame-resistant polymers and (b) prepare flame-, glow-, wrinkle and shrink-resistant woven and knit textiles which contain 25% or more cellulosic fibers.

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River Ridge, LA, United States of America

Sidney L Vail